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<?php |
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declare(strict_types=1); |
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namespace App\Crossword\Features\Constructor\Scanner\Grid; |
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use App\Crossword\Features\Constructor\Scanner\Exception\CellNotFoundException; |
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use App\Crossword\Features\Constructor\Scanner\Exception\SearchMaskIsShortException; |
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use ArrayIterator; |
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use IteratorAggregate; |
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/** |
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* @psalm-immutable |
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*/ |
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final class Row implements IteratorAggregate |
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{ |
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/** |
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* @var Cell[] |
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*/ |
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private array $cells; |
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public function __construct(Cell ...$cells) |
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{ |
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$this->cells = $cells; |
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} |
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public static function withRandomRow(): self |
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{ |
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$coordinateX = intdiv(20, 2) - random_int(1, 5); |
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$coordinateY = intdiv(20, 2) - random_int(1, 5); |
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$coordinate = new Coordinate($coordinateX, $coordinateY); |
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return new self(new Cell($coordinate, null)); |
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} |
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public static function withCell(Row $row, int $position, Cell $cell): self |
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{ |
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$row = clone $row; |
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$cells = $row->cells(); |
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if (array_key_exists($position, $row->cells())) { |
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$cells[$position] = $cell; |
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} |
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return new self(...$cells); |
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} |
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public function cells(): array |
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{ |
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return $this->cells; |
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} |
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/** |
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* @throws CellNotFoundException |
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*/ |
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public function cell(int $index): Cell |
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{ |
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if (array_key_exists($index, $this->cells)) { |
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return $this->cells[$index]; |
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} |
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throw new CellNotFoundException(); |
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} |
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public function remove(int $index): self |
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{ |
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if (array_key_exists($index, $this->cells)) { |
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$row = new self(...$this->cells); |
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unset($row->cells[$index]); |
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$row->cells = array_values($row->cells); |
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return $row; |
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} |
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return $this; |
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} |
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/** |
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* @throws SearchMaskIsShortException |
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* |
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* @example |
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* _ _ _ _ _ a ===> _ _ _ _ _ a.*{0,6} |
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* _ _ _ _ a _ ===> _ _ _ _ a .*{0,6} |
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* _ _ _ a _ _ ===> _ _ _ a .*{0,6} |
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* _ _ _ _ _ _ ===> .*{0,6} |
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* a _ _ _ _ _ ===> a.*{0,6} |
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* _ a _ _ _ _ ===> _ a .*{0,6} |
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* _ _a _ _ _ ===> _ _ a .*{0,6} |
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*/ |
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public function mask(): RowMask |
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{ |
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$mask = array_map(static fn (Cell $cell): string => $cell->letter() ?: '.', $this->cells); |
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$mask = implode('', $mask); |
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while (substr($mask, -1) === '.') { |
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$mask = substr($mask, 0, -1); |
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} |
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return new RowMask(sprintf('%s.*{0,%d}', $mask, count($this->cells))); |
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} |
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public function getIterator(): ArrayIterator |
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{ |
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return new ArrayIterator($this->cells); |
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} |
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} |
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dykyi-roman /
crossword
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